Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at s =200 GeV

(PHENIX Collaboration)

doi:10.1103/PhysRevD.103.052009

Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at s =200 GeV

(PHENIX Collaboration)

Physics and Astronomy

Stony Brook University

Georgia State University
University of Michigan, Ann Arbor
RIKEN
Brookhaven National Lab
Howard University
Iowa State University
Kyoto University
Brookhaven National Laboratory
Institute for High Energy Physics
University of Massachusetts
University of California at Riverside
City University of New York
University of Colorado Boulder
University of North Carolina at Greensboro
Peter the Great St. Petersburg Polytechnic University
Vanderbilt University
Russian Research Centre Kurchatov Institute
Moscow Engineering Physics Institute
New Mexico State University
Los Alamos National Laboratory
Columbia University
Stony Brook University
University of Illinois at Urbana-Champaign
Jeonbuk National University
Weizmann Institute of Science
Eötvös Loránd University
Eszterhazy Karoly University
Hungarian Academy of Sciences
Ohio University
Abilene Christian University
University of New Mexico

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11 Scopus citations

Abstract

We present a measurement of the transverse single-spin asymmetry for π0 and η mesons in p↑+p collisions in the pseudorapidity range |η|<0.35 and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have factor-of-3-smaller uncertainties. As hadrons, π0 and η mesons are sensitive to both initial- and final-state nonperturbative effects for a mix of parton flavors. Comparisons of the differences in their transverse single-spin asymmetries have the potential to disentangle the possible effects of strangeness, isospin, or mass. These results can constrain the twist-3 trigluon collinear correlation function as well as the gluon Sivers function.

Original language	English
Article number	052009
Journal	Physical Review D
Volume	103
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.103.052009
State	Published - Mar 22 2021

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10.1103/PhysRevD.103.052009

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@article{9383df5c980047c9a77efc2a2ff3fe3f,

title = "Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at s =200 GeV",

abstract = "We present a measurement of the transverse single-spin asymmetry for π0 and η mesons in p↑+p collisions in the pseudorapidity range |η|<0.35 and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have factor-of-3-smaller uncertainties. As hadrons, π0 and η mesons are sensitive to both initial- and final-state nonperturbative effects for a mix of parton flavors. Comparisons of the differences in their transverse single-spin asymmetries have the potential to disentangle the possible effects of strangeness, isospin, or mass. These results can constrain the twist-3 trigluon collinear correlation function as well as the gluon Sivers function.",

author = "\{(PHENIX Collaboration)\} and Acharya, \{U. A.\} and C. Aidala and Y. Akiba and M. Alfred and V. Andrieux and N. Apadula and H. Asano and B. Azmoun and V. Babintsev and Bandara, \{N. S.\} and Barish, \{K. N.\} and S. Bathe and A. Bazilevsky and M. Beaumier and R. Belmont and A. Berdnikov and Y. Berdnikov and L. Bichon and B. Blankenship and Blau, \{D. S.\} and Bok, \{J. S.\} and V. Borisov and Brooks, \{M. L.\} and J. Bryslawskyj and V. Bumazhnov and S. Campbell and \{Canoa Roman\}, V. and R. Cervantes and Chi, \{C. Y.\} and M. Chiu and Choi, \{I. J.\} and Choi, \{J. B.\} and Z. Citron and M. Connors and R. Corliss and N. Cronin and M. Csan{\'a}d and T. Cs{\"o}rgo and Danley, \{T. W.\} and Daugherity, \{M. S.\} and G. David and K. Deblasio and K. Dehmelt and A. Denisov and A. Deshpande and Desmond, \{E. J.\} and A. Dion and A. Drees and R. Esha and Hemmick, \{T. K.\}",

note = "Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2021",

month = mar,

day = "22",

doi = "10.1103/PhysRevD.103.052009",

language = "English",

volume = "103",

journal = "Physical Review D",

issn = "2470-0010",

number = "5",

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TY - JOUR

T1 - Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at s =200 GeV

AU - (PHENIX Collaboration)

AU - Acharya, U. A.

AU - Aidala, C.

AU - Akiba, Y.

AU - Alfred, M.

AU - Andrieux, V.

AU - Apadula, N.

AU - Asano, H.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bandara, N. S.

AU - Barish, K. N.

AU - Bathe, S.

AU - Bazilevsky, A.

AU - Beaumier, M.

AU - Belmont, R.

AU - Berdnikov, A.

AU - Berdnikov, Y.

AU - Bichon, L.

AU - Blankenship, B.

AU - Blau, D. S.

AU - Bok, J. S.

AU - Borisov, V.

AU - Brooks, M. L.

AU - Bryslawskyj, J.

AU - Bumazhnov, V.

AU - Campbell, S.

AU - Canoa Roman, V.

AU - Cervantes, R.

AU - Chi, C. Y.

AU - Chiu, M.

AU - Choi, I. J.

AU - Choi, J. B.

AU - Citron, Z.

AU - Connors, M.

AU - Corliss, R.

AU - Cronin, N.

AU - Csanád, M.

AU - Csörgo, T.

AU - Danley, T. W.

AU - Daugherity, M. S.

AU - David, G.

AU - Deblasio, K.

AU - Dehmelt, K.

AU - Denisov, A.

AU - Deshpande, A.

AU - Desmond, E. J.

AU - Dion, A.

AU - Drees, A.

AU - Esha, R.

AU - Hemmick, T. K.

N1 - Publisher Copyright: © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2021/3/22

Y1 - 2021/3/22

N2 - We present a measurement of the transverse single-spin asymmetry for π0 and η mesons in p↑+p collisions in the pseudorapidity range |η|<0.35 and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have factor-of-3-smaller uncertainties. As hadrons, π0 and η mesons are sensitive to both initial- and final-state nonperturbative effects for a mix of parton flavors. Comparisons of the differences in their transverse single-spin asymmetries have the potential to disentangle the possible effects of strangeness, isospin, or mass. These results can constrain the twist-3 trigluon collinear correlation function as well as the gluon Sivers function.

AB - We present a measurement of the transverse single-spin asymmetry for π0 and η mesons in p↑+p collisions in the pseudorapidity range |η|<0.35 and at a center-of-mass energy of 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider. In comparison with previous measurements in this kinematic region, these results have factor-of-3-smaller uncertainties. As hadrons, π0 and η mesons are sensitive to both initial- and final-state nonperturbative effects for a mix of parton flavors. Comparisons of the differences in their transverse single-spin asymmetries have the potential to disentangle the possible effects of strangeness, isospin, or mass. These results can constrain the twist-3 trigluon collinear correlation function as well as the gluon Sivers function.

UR - https://www.scopus.com/pages/publications/85104237600

U2 - 10.1103/PhysRevD.103.052009

DO - 10.1103/PhysRevD.103.052009

M3 - Article

SN - 2470-0010

VL - 103

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052009

ER -

Transverse single-spin asymmetries of midrapidity π0 and η mesons in polarized p+p collisions at s =200 GeV

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